The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:1959 advisory.

    The shim package contains a first-stage UEFI boot loader that handles chaining     to a trusted full boot loader under secure boot environments.

    Security Fix(es):

    * shim: RCE in http boot support may lead to Secure Boot bypass (CVE-2023-40547)

    * shim: Interger overflow leads to heap buffer overflow in verify_sbat_section on 32-bits systems     (CVE-2023-40548)

    * shim: Out-of-bounds read printing error messages (CVE-2023-40546)

    * shim: Out-of-bounds read in verify_buffer_authenticode() malformed PE file (CVE-2023-40549)

    * shim: Out-of-bound read in verify_buffer_sbat() (CVE-2023-40550)

    * shim: out of bounds read when parsing MZ binaries (CVE-2023-40551)

    For more details about the security issue(s), including the impact, a CVSS     score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References     section.

    IMPORTANT: The new shim revokes ALL VERSIONS of GRUB2 before grub2-2.02-0.87.el7_9.14. Therefore GRUB2     MUST be updated to the latest     version: grub2-2.02-0.87.el7_9.14 BEFORE or SIMULTANEOUSLY with this shim in order for Secure Boot to     continue to work. Failure to update GRUB2 will result in an UNBOOTABLE system.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Detections

Analytics

RHEL 7 : shim (RHSA-2024:1959)

high Nessus Plugin ID 193728

Version 1.2

Version 1.1

Version 1.0

Version 1.2 Nov 7, 2024, 8:25 PM CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on None, severity decreased from "High" to "Low") Plugin metadata Plugin Feed: 202411072025
Version 1.1 Jun 4, 2024, 7:00 PM Plugin metadata Plugin Feed: 202406041900
Version 1.0 Apr 23, 2024, 5:11 PM New Plugin Feed: 202404231711